Mucociliary clearance, airway inflammation and nasal symptoms in urban motorcyclists.

Objectives: There is evidence that outdoor workers exposed to high levels of air pollution exhibit airway inflammation and increased airway symptoms. We hypothesized that these workers would experience increased airway symptoms and decreased nasal mucociliary clearance associated with their exposure to air pollution.

Methods: In total, 25 non-smoking commercial motorcyclists, aged 18-44 years, were included in this study.